find the average speed if a cyclist travels 6km/h for 25 minutes and 8km/h for 15 minutes
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Step-by-step explanation:
speed=6km/h=6×1000m/60=100m/min
time=25min.
distance=speed×time
=25×100
=2500m
Now, speed=8km/h =8×1000min/60
=133.3m/min
time=15min
distance=speed×time
=15×133.3
=2000m
avg.speed =total distance /total time
=2000+2500/15+25
=1400/40
=112.5m/min
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find the average speed if a cyclist travels 6km/h for 25 minutes and 8km/h for 15 minutes
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